Drive time to cardiac rehabilitation: at what point does it affect utilization?

BACKGROUND: A 30 minute drive time threshold has often been cited as indicative of accessible health services. Cardiac rehabilitation (CR) is a chronic disease management program designed to enhance and maintain cardiovascular health, and geographic barriers to utilization are often cited. The purpose of this study was to empirically test the drive time threshold for CR utilization. METHODS: A prospective study, using a multi-level design of coronary artery disease outpatients nested within 97 cardiologists. Participants completed a baseline sociodemographic survey, and reported CR referral, enrollment and participation in a second survey 9 months later. CR utilization was verified with CR sites. Geographic information systems were used to generate drive times at 60, 80 and 100% of the speed limit to the closest CR site from participants' homes, to take into consideration various traffic conditions. Bivariate analysis was used to test for differences in CR referral, enrollment and degree of participation by drive time. Logistic regression was used to test drive time increments where significant differences were found. RESULTS: Drive times were generated for 1209 outpatients. Overall, CR referral was verified for 523 (43.3%) outpatients, with verified enrollment for 444 (36.7%) participating in a mean of 86.4 +/- 25.7% of prescribed sessions. There were significant differences in CR referral and enrollment by drive time (ps < .01), but not degree of participation. Logistic regression analysis (ps < .001) revealed that the drive time threshold at 80% of the posted speed limit for physician referral may be 60 minutes (OR = .26, 95% CI: 0.13-0.55), and the threshold for patient CR enrollment may also be 60 minutes (OR = .11, 95% CI: 0.04-0.33). CONCLUSIONS: Physicians may be taking geography into consideration when referring patients to CR. Empirical consideration also reveals that patients are significantly less likely to enroll in CR where they must drive 60 minutes or more to the closest program. Once enrolled, distance has no significant effect on degree of participation.

Contribution of patient and physician factors to cardiac rehabilitation enrollment: a prospective multilevel study.

BACKGROUND: Cardiac rehabilitation (CR) is an established means of reducing mortality, yet is grossly underutilized. This is due to both health system and patient-level factors; issues that have yet to be investigated concurrently. This study utilized a hierarchical design to examine physician and patient-level factors affecting verified CR enrollment. DESIGN: A prospective multisite study, using a multilevel design of 1490 coronary artery disease outpatients nested within 97 Ontario cardiology practices (mean 15 per cardiologist). METHODS: Cardiologists completed a survey regarding CR attitudes. Outpatients were surveyed prospectively to assess factors affecting CR enrollment. Patients were mailed a follow-up survey 9 months later to self-report CR enrollment. This was verified with 40 CR sites. RESULTS: Five hundred and fifty (43.4%) outpatients were referred, and 469 (37.0%) enrolled in CR. In mixed logistic regression analyses, factors affecting verified CR enrollment were greater strength of physician endorsement (P=0.005), shorter distance to CR (P=0.001), being married (P=0.01), and fewer perceived CR barriers (P=0.03). CONCLUSION: Both physician and patient factors play a part in CR enrollment. Patient CR barriers should be addressed during referral discussions, and reasons why physicians fail to uniformly endorse CR exploration. Although distance to CR was related to patient enrollment patterns, greater access to home-based CR services should be provided.

Contribution of patient and physician factors to cardiac rehabilitation referral: a prospective multilevel study.

BACKGROUND: Cardiac rehabilitation (CR), in most developed countries, is a proven means of reducing mortality but it is grossly underutilized owing to factors involving both the health system and patients. These issues have not been investigated concurrently. To this end, we employed a hierarchical design to investigate physician and patient factors that affect verified CR referral. METHODS: This study was prospective with a multilevel design. We assessed 1,490 outpatients with coronary artery disease attending 97 cardiology practices. Cardiologists completed a survey about attitudes to CR referral. Outpatients were surveyed prospectively to assess sociodemographic, clinical, behavioral, psychosocial and health system factors that affected CR referral. Responses were analyzed by mixed logistic regression analyses. After 9 months, CR referral was verified at 40 centers. RESULTS: Health-care providers referred 550 (43.4%) outpatients to CR. Factors affecting verified referral included positive physician perceptions of CR (P = 0.03), short distance to the closest CR site (P = 0.003), the perception of fewer barriers to CR (P < 0.001) and a sense of personal control over their condition by the patient (P = 0.001). CONCLUSIONS: Physician-related and patient-related factors both contribute to CR referral. The most relevant physician perceptions of such programs are program quality and perceived benefit. For patients, the most relevant factors are perceived barriers to CR, which might be conveyed during prereferral discussions. Work to improve physicians' perceptions and patients' understanding might improve use of rehabilitation services.